Weaving loom



July 21, 1936.

K. SCHWABE WEAVING LOOM Filed March 8, 1935 2 Sheets-Sheet l IIIIIIIII.

July 21, 1936. sc w 2,048,356

WEAVING LOOM Filed March 8, 1935 2 Sheets-Sheet 2 I 455. w P 0 44 3.9 1w

Fig.4

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Patented July 21, I936" E TQFFIC E Y -LcoM, Kurt 'Schwabe, Bielitz-Bielsko, Poland Ap cation Marc 8, 1935, Serial No. 9,961

,. In Germany March 3, 1934 2 Claims. (01. 139-241) I;he object of the present invention relates to aweaving loom provided with multiple shuttle change-on bothsides of the lay as well as auto,- gn atic replacement or exchange of bobbins or ,shuttleszforbne or more colours, wherein the shuttlechange can be effected at will and quite independently of the exchanging device, in contradistinction to similar weaving looms of. this type already known, viz, to so called blending or mixing change-over automatic looms, which however only permit of a dependent and limited change of shuttles or a very limited exchange or replacement of bobbins. By means of the present invention the very wide field of weaving which wasformerly reserved purely for the ordinary ,weaving loom, such asthe weaving of millinery and Jacquard fabrics, is now available for automatic looms.

The basic idea of the invention is this, that, if {420 the bobbin has run out, and if the bobbin or shuttle change is one sided, the shuttle with the empty bobbinis shot from thefeeler side into an 1 auxiliary shuttlebox provided outside the shuttle -box on; the exchange side; the bobbins or the A shuttle being exchanged for another suitable one, 1 whereupon the shuttle with the full bobbin is again pushed into that compartment otf the ,shuttle box, into which it would have been placed, .if no bobbin or shuttle change had taken place. o: @For, this purpose, if the bobbin or shuttle exchange has started, the picker is withdrawnout of .the reach of the path of the shuttle on the change side, in order that the shuttle can freely enter into the shuttle box on the exchange side. The apupended drawings show a constructional form of .the present invention by way of example, andin .these drawings,-- i i l 1 .showsa plan of the whole arrangement of the automatic exchanging device, and- Fig. 12 shows aside elevation thereof;

Fig. 3 shows a plan view of the actuating rail on a larger scale, whereas Figs. 4 and show the gearing for the bobbin exchange in elevation and side view, and

48 Figs. 6 and '7 show a plan view of details of the gear.

Fig. 8 represents a travel-time diagram for the necessary motions for the bobbin exchange.

In the case of the embodiment shown on the 50 drawings, the feeler mechanism is on the left side of the loom, which feels the bobbin in the manner known per se, between shuttle change and shuttle pick. The usual reserve bobbin magazine and the transferrer 23 are also shown. If

55 the bobbin is empty, then the low tension eleckeyed thereunto reaches.

tric current circuit is closed, thus energizing the automatic switch I which sets the motor 2 in motion. The switch I and the motor 2 are mounted on the driving gear box 3 into which the shaft of the motor 2 and the gear wheel 4- 5 When the motor is running it drives by means of the gear wheel 4 the gear wheel 5 which is rigidly connected to the gear wheel 6 both these two gear wheels running loose on the shaft or spindle "I. V The gear wheel 9 keyed onthe shaft 8, meshes with the gear wheelli, The shaft 8 is rotatably mounted in the gear box 3. The eccentrics m, ll, l2, l3 and I4 keyedon to the said shaft 8 rotate in unison with the saidshaft 8. The eccentric l9 actuates the roller lever l5 the eccentric II the roller lever I6, the eccentric IS the roller lever I! all thesaid roller levers being rotatably mounted on the shaft or spindle I. The eccentric l2 actuates the roller lever [B mounted and keyed on the short spindle, 20 and thereby also the lever l9 mounted on the same spindle, the said spindle 20 being rotatably mounted in the gear box 3. I

The eccentric l4 acts by means of the lever 2 on the magnetic. automatic switch I. V

g A pull rope or rod 22 connects the lever IS with the hammer or transferrer 23, a pull rope or rod .24 connects the lever 15 to the double armed lever 25, which is rotatably mounted on the shaft 26. The latter is mounted and seated in two arms 21a and 2111 which are fixed to the sides ofthe gear box 3. A further pull rope or rod 28 connects the lever 25 to a bell crank lever 29 which is rotatably mounted on the trunnion 30, and

embraces the picker spindle 3 I, the latter passing through a slot provided in the former. The trunnion 30 is located in the driver rail 32. The lever I0 is articulated by means of the rod 33 to the lever 34 and actuates the vertical uncoupling shaft'35 of the loom. A pull rod or rope 36 0 connects the roller lever I! with a double lever 31 which resembles on one side the lever 25 but is on the other side provided with a flat surface 38, against which the shoe of the repeating apparatus 40 which is suitably bent or curved, rests. The repeating apparatus shoe 40 carries the striker 4| which penetrates into the exchanging or auxiliary shuttle box 42 and is enclosed by a sliding block 43 which is guided by the walls of the exchange box 42. The pin 39 is mounted on a Cardan joint 44 the bearing pins 45a and 45b are mounted on the arm 21b. The face 38 of the double lever 31 and the corresponding point of the two armed lever 25 are arranged in such F a manner, that they are on a centre line with the 05 lay foot pin 46. The Cardan joint 44 is provided for the purpose to enable the repeater 4| to rock together with the lay.

The picker spindle 3| is rotatably mounted at one of its extremities on the trunnion or pin 41 on the driver rail 32, whereas the other extremity carries the slide member 48 which reaches around the picker 49 and is guided in a guide 50 and is displaceable therein. Fig. 8 shows-the travels of the individual eccentrics and their relative positions. A complete revolution of the eccentric shaft 8 is sub-divided into 20 equal parts, desig-;

nated with the numerals 1-19. The rest position at which the loom normally works is designated with 0. r r I The operation of exchanging a bobbin is the following viz: When the bobbin is empty, the electromagnetic switch I switches the motor 2 in, and the eccentric shaft 8 is caused to rotate thereby by means of the gear wheel pairs 4, 5 and 6, 9. The eccentrics l8, II, I 2, l3, l4 actuate according "to their eccentric shape the corresponding roller levers, at an earlier or later moment. By reason of this arrangement the picker spindle 3| is, during the time the shuttle travels from the feeler to the exchange side, movedby means of the eccentric lt from the position 1 into the position 2, and the loom is uncoupled or stopped by the ecing actuated by the eccentric I3, and conveys the 'shuttle with the new bobbin into that compartment of the shuttle box, which it had just passed through. The curve of the eccentric I 0 is of such a shape, that the picker was held during the whole of the time in the position 2. After the shuttle has entered the shuttle box the protrudingpon. tion of the curve of the eccentric I'U recedes and Ithe. picker returns into the position 1. The same holds good for the eccentric l2 which almost simultaneously throws the loom into action, which latter continues to work normally.

At this point the switch is thrown olf by the eccentric M and the motor 2 is stopped; Consequently the shaft 8 comes to rest as do also the eccentrics H), H, l2, l3 and M; The design of the pairs of gear wheels l, 5 and 6, 9 is suchthat the "hammer 23 only exchanges the bobbin at the I moment when the shuttle has safely reached the shuttle exchange box 42.

It is of course self-evident that the exchange of the bobbin or of the shuttle can be effected in the yzine at one side of the loom, a transferrer for supplying bobbins to the shuttle, and feeler means for" indicating when a shuttle requires a filled vbobbinrthe combination of an auxiliary shuttle 15 box disposed beyond said first shuttle box along the lay and beneath said magazine, and feeler operated means connected to said picker for moving it outof shuttle operating position when the Weft is substantially exhausted whereby the shuttle will be propelled into said auxiliary shuttle box, and subsequently actuated feeleroperated means operable to successively actuate said drivemeans clutch to stop the loom, move said bobbin transferrer to place a filled bobbinin said 2 shuttle, 'then return said shuttle to said shuttle box, then return the'picker to shuttle picking position, and finally actuate said clutch to cause the loom to resume operation. v

2. In an automatic weft replenishing loom in Q9 eluding a shuttle, shuttle box, a. picker movable to and from shuttle picking position, 'a clutch and drive means for the loom controlled thereby, a reserve bobbin magazine for the shuttle at one side of the loom, a transferrer forsupplying bobbins to said shuttle, an auxiliary shuttle box disposed beyond said first shuttle box along the lay and beneath said magazine for receiving the shuttle that is to receive a filled bobbin fromthe magazine, means for returning a filled shuttle to 10 the shuttle box from said auxiliary shuttle box, and feeler means for indicating when a shuttle requires a'filled bobbin; the combination'of a control unit arranged at the side of said loombelow said auxiliary shuttle box, said 'unit-compris-gg5 ing'a frame, a motor carried "by said frame,- -'a cam shaft operatively connectedto said motor and driven; thereby, a cutout switch for said motor, separate cams on said shaf-t, different ones of said cams operatively connected to said-drive &0 means control clutch, picker transf'errer, shuttle return means, and switch, rspectivelmsai-d cams being arranged to actuate in'the order set' forth the said elements they control, the picker control cam bein'gformed' to maintain the picker'out of @{55 shuttle picking position until the shuttle return cam has operated to return the shuttle to the KURT scrIwAnEf 

